rough colony

Also found in: Medical.

[′rəf ′käl·ə·nē]

(microbiology)

A flattened, irregular, and wrinkled colony of bacteria indicative of decreased capsule formation and virulence.

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3), non-pigmented and non-hemolytic irregular rough colony morphology (see Fig.

Cultures were grown overnight on MacConkey agar, and a rough colony was placed in nutrient broth and grown for 18 hours at 37[degrees]C.

The So93 strain expands by one rough colony for every 500 smooth colonies.

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